Car-truck bearing.



No. 653,522. Patented Iuly l0, I900.

F. R. NDRTHAM. CAR TRUCK BEARING.

(Application filed Feb. 12, IQOO.)

2 Sheets-Sheet I.

(No Model.)

Wz'zwesses Patented My ID, I900.

F. R. NORTHAM.

CAB TRUCK BEARING. (Application fil ed Feb 12, 1900 2 Shets$heet 2.

(No Model.)

UNITE-D STATES PATENT FRANK R. NORTHAM, OF CHICAGO, ILLINOIS, ASSIGNORTO THE ANGLO- AMERICAN PROVISION COMPANY, OF SAME PLACE.

CAR-TRUCK BEARING.

SPECIFICATION formingpart of Letters- Patent No. 653,522, dated July 10,1900.

Application filed February 12, 1900. Serial No. 4,943. (No model.)

To all whom it may concern.-

Be it known that I, FRANK R. NORTHAM, a citizen of the United States ofAmerica, and a resident of Chicago, in the county of (look and State ofIllinois, have invented certain new and useful Improvements in Oar-TruckBearings, of which the following is a specification.

My invention relates particularly to center bearings and side bearingsfor railway-trucks. Its main object is to provide improved means forraising the car-body from the truck to allow for sagging of said body. Iaccomplish this object by the mechanism shown in the accompanyingdrawings, in which- Figure 1 is a front elevation, partly sectional,showing the upper part of a truck and the lower part of a car-body,having my im proved form of bearings applied. thereto. Fig. 2 is a topplan of the part of the side bearings secured to the truck. Fig. 3 is avertical section of same on the line 3 3 of Fig. 2. Fig. etis a top planof the center plate secured to the car-body. Fig. 5 is a bottom plan ofsame. Fig. 6 is an enlarged central vertical section of the centerbearing, taken on the line 6 6 of Fig. 1. Fig. 7 is a top plan of theremovable plate shown between the upper and lower plates in Fig. 6. Fig.8 is a central vertical section of same on the line 8 8 of Fig. 7. Fig.9 is a top plan of the center plate secured to the truck, showing sameslightly reduced from the size shown in Fig.

6. Fig. 10 is a vertical central section of same on the line 1O 10 ofFig.- 9. v

The center plate lis secured upon the truck 2 by means of the bolts 4..The center plate 5 is secured to the car-body'7 by means of the bolts 9.The plate 11 is inserted between the plates 1 and 5 when it is desiredto raise the car-body on the truck. The side bearings each consist ofthe supporting member or socket-piece 12, which is secured to the truckby bolts 13, a block 14, secured to the carbody by bolts 15, a block 16,fitting in said socket, and a block 17, which is inserted in thesocket-piece under the block 16 when it is desired to raise the car-bodyto the position shown in Fig. 1. The plate 5 has the depending convexprojection 18, which is made to fit into the socket 19 of the plate 1and the socket 20 of the plate 11. The convex part 18 has a centralrecess 21 for receiving the tubular projection 22 on the plate 1. The

plates 1 and 5 have the central apertures 23 and'24, through which thecar body and truck are pivotally connected in the usual manner.

The plate 11 has a central aperture 25 for receiving the tubularprojection 22 of the plate 1. The plate 1 has its concaved face 19 onthe raised part, which is flattened on opposite sides, as at 26. Theflanges 27 of the plate 11 abut against said flattened parts 26, andthus prevent the plate 11 from rotating on its seat.

In Fig. 4. the reference-numeral 27 represents depressions in the upperface of said plate, which serve merely to decrease the weight. 28represents tubular reinforcements around the bolt-holes 29. Otherboltholes 30 are provided in different plates for securing same inproper position. 31 represents reinforcing-rims for the bolt-holes 30 inthe plates 1 and 5.

The operation of my device is as follows: It will be understood thatafter a car has been used for some time the car-body will sagdownwardly. It has therefore been found necessary to raise the car-bodyslightly on its bearings. This has been done heretofore by removing thelower center plate and securing a block under same. The sidebearings,which have consisted of plates of metal blocks, have beenraised in a similar manner by removing same from the truck and securingan additional block under same. In my device the car will first be usedwithout the plate 11 and block 17. It will be seen that the face 18 ofthe plate 5 will then rest upon the concave face 19 of the plate 1 andthe block 16 will rest upon the bottom of the socket in the member 12.After the car-body has sagged so that it is desirable to elevate same atthe bearings the operator will merely cause the body to be raised fromthe truck and insert the plate 11. He will also remove the block 16 andinsert the block 17 under same.

It will be understood that some of the de tails of construction in thedevice shown may be altered without departing from the spirit ICO of myinvention. I therefore do not confine myself to such details except ashereinafter limited in the claims.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination of a car-truck and carbody, with a centerbearing-plate secured to each, one of said plates havinga convex faceand the other having an oppositely-formed depression for receiving theconvex part, a removable concavo-convex plate fitting between saidotherplates,a socket-piece secured to the truck at each side of itscenter plate, and a pair of separable blocks seated in said socket-pieceone above the other, the upper block being vertically movable in saidsocketpicce and supported in a raised position by said lower block,substantially as and for the purpose specified.

2. Ihe combination of a car-truck and carbody, with a centerbearing-plate secured to each, one of said plates havingaconvex face andthe other having an oppositely-formed depression for receiving theconvex part, a removable concavo-convex plate fitting between said otherplates, and a pair of side bearings located on opposite sides of saidcenter plates; each of said side bearings comprising a supportingmember, a verticallymovable bearing-piece slidingly engaging saidsupporting member and means for fixing the relative vertical position ofsaid bearingpiece and supporting member, substantially as and for thepurpose specified.

3. The combination of a car-truck and carbody, with a centerbearing-plate secured to each, one of said plates havinga convex faceand the other having an oppositely-formed depression for receiving theconvex part, a removable concavo-convex plate fitting between said otherplates, and being engaged by one of said bearing-plates against relativerotation, and a pair of side bearings located on opposite sides of saidcenter plates; each of said side bearings comprising a supportingmember, a vertically-movable bearing-piece slidingly engaging saidsupporting member, and means for fixing the relative vertical positionof said bearing-piece and supporting member, substantially as and forthe purpose specified.

Signed by me at Chicago, Illinois, this 8th day of February, 1900.

FRANK R. NORTHAM.

Vitnesses:

FREDERICK OoRDIN, BENJAMIN R. IRVING.

